A structure formed from molecules that combine to make up cells is called an atom.
D because to help preserve environment everyone has to work together
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❖ The correct answer choice is 25%. If you cross Bb and Bb in a punnett square, you get BB, Bb, Bb, bb. All of these are dominant besides bb (which is blue eyes and recessive) so 75% is brown eyes and 25% is blue eyes.
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Answer: Myelin
Explanation:
The speed of the neurotransmission increases as we grow. The behavior of the teenager is quite different from the behavior of the adolescents.
They are more active, heroic and wants to take risk. This is because their brains are not completely developed till they reach the age of 25.
As they grow and reach the late 20s the white mater in the brain increases as the frontal lobe is the last part of the brain development.
Due to the development of the myelin in the frontal lobe the transmission of the signal increases at adolescence.
Its B since the lower leaves need sunlight to make food (photosynthesis)